Well,I agree with you...a better preview is a good idea and done like you say I dont think they would be worth ripping,they would be a mess as an actual dream.
Rendering out a half rez dream cut down in length wouldnt be hard but I still dont have a way to host it in high enough quality to do them justice...and good idea or not,I dont think Wincustomize is going to do more than they are now.
A full rez version as short as 10 seconds wouldnt tell you much more about the dream I made(4:09)than the still does.
Something I am looking into is maybe packaging 3 dreams together and pricing them at say...5.95.
3.99 is the least you Winc allows you to charge because of all the transaction fees.20%of that is the fees,Winc and the artist split the rest.
Problem is,I'm not sure Winc is set up to allow for a 450mb dream upload with 3 seperate dream files(and 3 times the preview needed)...maybe,I havnt asked yet.